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228267613 = 7296011871
BaseRepresentation
bin11011001101100…
…01011001011101
3120220112012022001
431212301121131
5431414030423
634352322301
75441146150
oct1546613135
9526465261
10228267613
1110793a922
1264543391
13383a38c2
142245dc97
151508ecad
hexd9b165d

228267613 has 16 divisors (see below), whose sum is σ = 270466560. Its totient is φ = 188496000.

The previous prime is 228267509. The next prime is 228267629. The reversal of 228267613 is 316762822.

It is a de Polignac number, because none of the positive numbers 2k-228267613 is a prime.

It is a super-2 number, since 2×2282676132 = 104212206289435538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228261613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121068 + ... + 122938.

It is an arithmetic number, because the mean of its divisors is an integer number (16904160).

Almost surely, 2228267613 is an apocalyptic number.

It is an amenable number.

228267613 is a deficient number, since it is larger than the sum of its proper divisors (42198947).

228267613 is a wasteful number, since it uses less digits than its factorization.

228267613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508.

The product of its digits is 48384, while the sum is 37.

The square root of 228267613 is about 15108.5278237160. The cubic root of 228267613 is about 611.1503983031.

The spelling of 228267613 in words is "two hundred twenty-eight million, two hundred sixty-seven thousand, six hundred thirteen".

Divisors: 1 7 29 203 601 1871 4207 13097 17429 54259 122003 379813 1124471 7871297 32609659 228267613